Question: What are the coordinates for the geographic center of Michigan, as determined by the center of gravity of the surface?
Paraphrase: Where is the geographic center of Michigan using the gravity center of the surface?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q1166 p:P5140 ?s . ?s ps:P5140 ?obj . ?s pq:P459 wd:Q53329492 }